A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5935-01-388-0162
NSN 6130-00-317-3054
NSN 6130-00-553-6199
NSN 5990-01-434-7913
NSN 6620-01-610-5081
NSN 5950-01-655-7289
NSN 5905-01-189-3101
NSN 6240-01-070-6028
NSN 5905-01-207-7990
NSN 5999-00-639-3447
NSN 5910-01-485-6135
NSN 6650-01-572-1355